Distributer-head for magnetos.



G. T. DOCHTERMANN.

DISTRIBUTE-:8 HEAD FOR MAGNETOS.

APPLICATION FILED APR. 10, 191B.

Patented Dec. 31', 1918 GEORGE T. DOCHTEBMANN, 0F PA SSAIC, NEVI JERSEY.

DISTRIBUTEB-HEAD FOR MAGNETGS.

Specification of Letters Patent.

Application filed April 10. 1918. Serial No. 227,678.

To all who 11bit may concern:

Be it known that I, GEORGE T. DOCHTER- MANN. a citizen of the United States, and a resident of Passaic, in thecounty of Passaic and State of New J ersey, have invented certain new and useful Improvements in Distribute-r-Heads for Magnetos, of which the following is a specifiation.

This invention relates to distributor heads for lnagnetos and other electrical instruments in which the electrical circuit is'bro'ken at regular predetermined intervals.

The object of my improvements is to pro vide a device of the class specified in wv'hich the Parts are of simple and long wearing construction and in which the contact of the make and break members is of relatively long duration. Other objects will appear later herein.

My improved. head is illustrated in its preferred embodiment in the drawings accompanying this specification wherein Figure 1 is a sectional elevation of so much of a dis tributer head as will sutiice to show my improvements. Fig. 2 is a bottom plan view of what is shown in Fig. 1 iwithithe distributer disk removed. Fig. 3 is a sectional elevation of the distributer disk looking in the direction of arrow 3 of Fig. 1. Fig. 4 is. a sectional plan view online. 4.-4.- of Fig. 3. Fig. 5 is a plan view of What is shown in Fig. 3. l

The outside contour of distributor block 2 is of an accepted pattern and is provided with a plurality of distributor posts as 5, 6, 7 equally spaced on a circle concentric with the axis of the device. Said posts extend through said block 2 to the inner face there of and carry fixed therein respectively the stems of a plurality of electrical conta ts 8, 9, 10, and 11. The inner face of said block 2 is of frusto-conical shape and the inner faces of said contacts coincide with the coni cal portion 12 e f-said .wall and terminate in- Wardly against the fiat circular wall 13 of said inner face. Contacts 8 to 11 are arranged in' positions respectively, inclincdib the axis of said block and disk 14 as shown particularly in Fig. 2 so that a protracted field of contact is provided for the disk brush as it passes over each contact.

For rotation within the cavity formed by portions 12 and 13 of the inner wall of blo'k 2, frusto-conical distribution disk 14 is pro-' vidcd. Said disk has stem 15 projecting axially therefrom and said stem is provided .pin 24.

with an axial hole 16 therethrough for spring urged collector brush 17.

Said disk 14 has mounted therein-for radial movement carbon brush 18 having an angled nose for engagement with contacts 8 to 10. "Said brush is contained within metal box-like member 19 fixed in disk 14 and is urged to engagement with contacts 8 to 10 and with the inner conical avail; of block 2 by spring 20. Said box 19 has an insidewidth a'hoait twice the width or thickness of brush 18 and the remaining space in said box is occupied by a wiper 21 of felt or other suitable material. Said wiper is provided with spring 22 to urge it outwardly for engagement with contacts 8 to 10 and with the conical wall 12 of block 2. Also said wiper is preferably placed in advance of brush 18, in the direction of rotation of said brush.

For rotating disk 14: gear 23 is provided and said gear and disk may be connected by I claim:

1. A distributor head including in combination a frusto-conical distributor. disk, :1 brush carried in said disk and having one end thereof protruding from the conical face of said disk, a block inclosing said disk and having a frusto-conical inner Wall complementary to the frusto-conical outer wall of said disk, a plurality of electrical contacts arranged around the inner frusto-conical Wall of said block and having their outer faces respectively coincident with the conical face of said inner wall, a contact wiper carried by said disk and hated ahead, in its direction of travel, of said brush and contiguous thereto, means for urging said brush into engagement with said contacts, independent means for urging said wiper into engagement with said contacts. means for rotating said disk. and electrical coune"tions from said contacts to without said casing.

2. A distributor head in luding in combination a frusto-conr'al distr butor disk. a carbon brush carried in said disk and having one end thereof protruding from the conical fa e of said disk. :1 block inclosing said disk and having a trusto-conical inner wall complcmentarv to the frusto-conical outer wall of said disk. a plurality of elmtrical contacts arranged around the inner frusto-conical wall of said'block and having their outer faces respectivelv coincident with the conical face of said inner wall, said contacts be- Pateuted Dec. 31. 1918.

of wave harem mea Emu 3mm to Jeriwher of said disk inner wall? and having their 01 V1" faces respectlvaiy cmncldent Wlth sadld giumfiiiy @f alectrical contacts arranged ',20

Waii, said con'tac is being inclined to the aXis at said disk and bbck 50 that a pmtracted field of Contact 01 said disk brush with said uml'fiaws iclsah a cmr'mcb Wiper carried by said a sh: i1 heated. ahead, in its direction of 101211 4511 01 said brush and cantiguous ihQl'G'lZ-O, means for urging" said brush into engagement w said contacts and indepanden b means rim: urging said Wiper inte m viHlil contacts.

.nass Whereflf, 1T hereunto afiix my 7&5 k; 8&1 day of April, 1918. 

